Wire-feeding mechanism.



S. C. LAY & F. M. BAKER.

wme FEEDING MECHANISM.

APPLICATIDN FILED APR.22, I918.

Elli

SAMUEL C. LAY, 0F RIDGEVILLE,

MICHIGAN, A SSIGNORS A CORPORATION.

aaaoai. original application filed February 12, 1917, Serial No.

Specification of Jtetters Patent.

148,132. Divided and INDIANA, Ann rREnERIcK M. BAKER, or iJE'rEoIr, are THE JOSEPH LAY coMrAnY, or IDGEVILLE, INDIANA,

WIRE-FEEDING- MECHANISM.

Patented Feb. 18, 1919.

this application filed April 22,

1918. Serial No. 230,052.

To all whom it may concern: Be it known that we, SAMUEL C. LAY and FREDERICK M. BAKER, citizens of the United States, andresidents of Ridgeville and Detroit, respectively, counties of Randolph and Wayne, respectively, and States of In: diana and Michigan, respectively, have invented a certainnew and useful Wire-FeedingMechanism; and we do'hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which like numerals refer to like parts. I This invention relates to wire feeding mechanism for broom stapling machines, and is a division of our former application Serial N 0. 148,132, filedFebruary 12, 1917. The main feature of the invention is the means for feeding thestable wire into the machine at given intervals and predetermined lengths so as to provide the proper amount of wire to form. each staple. This is accomplishedby rotatably mounted rolls between which the wire is fed, one of the rolls being provided with acam member.

for engaging the opposite roll'and elevating it out of engagement with the wire so that the feeding thereof will be temporarily ar-, rested until the length already fed-into the machine has been formed into a staple. and driven into the broom head.

A furthenfeature of the invention is to provide yielding means for normally holding the rolls in engagement with each other and means for adjusting the same. A further feature of the invention is the provision of means for holding the wire stationary while the rolls are out of engagement.- therewith. Other objects and advantages will be hereinafter more fully' set forth.

The full nature of 'theinvention" will be understood from the accompanying drawings and the following description and claims.

Figure 1 is a detail side elevation of a portion of a broom staplin machine showing the wirefeeding mec anism, mounted thereon. Fig. 2. is a detail sectional ,view as seen on line 22 of Fig. 1.- Fig. 3 is an edge elevation .of the feeding mechanism,- showing the wire. olding mechanism in" position thereon. a

Referring to the drawings in which similarreference numerals designate corresponding parts throughout the several views, 11

. roll 31-upwar ly when turned in engagement with will thus'be seen i into the machine at indicates a part of the frame of. a broom stapling machine, which carries staple forming and driving these parts are embodied in our former application. it is not deemed necessary to further describe the same.

Tn devices of this class a strand of wire 37 is fed from any suitable point, such as a parts 46, 47 and 48, but as at; i

reel or spool (not shown) into the staple forming mechanism, where it is out in lengths and formed into a staple and as said wire has to be fed intermittently it is passed between a pair. of rolls and 31, which rolls are mounted upon shafts 26 and .29 respectively. The shaft 26 extends through a bearing in the frame 11, while the shaft 29 extends through a bearing 32 which is vertically slidable in a slot 12 of. the framell, and the roll 31'is held in engagement with the roll 30 by spring 35, the lower'end of which rests upon the bearing 32 while the upper end thereof is attached to a bolt 33, threaded through the upper end of a housing 34.

The rolls 30 and 31 are provided with groovesv 36 through which the wire 37 extends andso long as the faces of the rolls are in engagement with each other the wire will be fed lnto the staplin mechanism.

As the wire is to .be fed into the stapling mechanism intermittently, and in lengths, the roll 30 is. provided with a cam portion 38..whichextends partly around said roll and which engages the roll31 as the rolls are rotated, the cam portion 38 forcing the to engagement therewith, thereby moving the hear ing 32 upwardly and disengaging the roll 31 from the wire, remain immovable the roll 31 'and will re main stationary until the cam again passes out ofengagement with the roll 31, where,- upon"'the springwill again bring the rolls togetherand feed an additional length of wire into the staple forming mechanism. It that the wire will be fed To prevent movement of the wire after it is released by'thev rolls there is provided a clamping device 39 comprising a stationary jaw 39, and a-.movable jaw 39*, said whereupon the wire will so longas the cam is in the tension of the given intervals and in given lengths depending upon the size of tween the rolls through the I vice and when-the cam 38 is turned so as engagethe roll 3'1,'said roll will be moved 25,

ings an 31, said roll Will agaln jaws being heldtogether by extending a bolt 39 throggh openings in the j aws,'said open,- bolt being preferably square in cross section to'prevent rotation of'the jaw ".,"or any other suitable means may be provided for holding the jaw 39" against rotation.

The inner face of the jaw 39 is preferably inclined so as to receive a'wire 37 between the jaws,- said wire being yieldingly clamped between the jaws by providing a spring 40 whichsurrounds that portion of the bolt 39 extending between the jaw 39 and thepart of the frame toowhich it is attached, the spring being held aroundthe bolt by means of a nut or other suitable means. I In operation, thewine' is introduced be-' grooves 36, and as said rolls are rotated, a length of the wire will be drawn through the clamping device and fed into the staple. forming d'e-- to upward and the wirm'released, thereby permitting the wire to remain stationary while the vstaple is being 'formed, and driven, the wire being held against movement by th e clamping device 39. As soon as the cam 38 haspassed out of engageme'nt with the roll descend and impinge the wire between the rolls and feed an additional section ofwi'reto the staple forming -device,-thus intermittently'feeding the wire t 'stapling device.v

to 'the staple forming device in predeterm ned lengths. Asthe wlre rests loosely between the rolls when the cam is raising the upper roll, it isheld' against. movement in clamping device 39., thus always maintaining the-proper length of wire)to-be fed 'to he invention claimed-is f i 1; The combination with apair of wire feedlng rolls, and means for intermittently disengaging the rolls from the wire, of Y means for 'fricti onal ly engaging'the wire to ei her -dlrectionthrough the medium of the prevent longitudinal movement thereof when.

' movable jaw against a wire between said jaws.

2'. The combination with a pair of wire feeding rolls, and means ta intermittently separate the rolls, of a clamping device for frictional engagement with the wire to hold the same against movement when the rollsv are disengaged, including a pairof jaws forwardly of said rolls, between which the wire passes before entering between said rolls, one of said jaws ,being stationary'a'nd having a flat-face, and the other jaw being movable and having an 'inclined'face forming a gap for'receivin the wire, a bolt extending transversely'thro gh said jaws, a spring surrounding said bolt and pressing against the stationary jaw for holding the movable j aw stationary jaw having a ver- I in frictional engagement with the wire passing between the jaws.

3. The combination with a pair of wire feeding rolls, and means foriintermittently separating said rolls and releasing the wire therebetween, of a clamping device for holding the wire against longitudinal movement when the rolls are separated, comprising a stationary jaw and a movable. jaw, the outer face of ,the stationary jaw being straight and the inner face of the movable ,jaw being inclined, said faces) forming a wedge shaped gap for receiving a wire, a bolt for holdin said jaws together, and a spring'surroung n the bolt between one of its-ends and the ed jaw adapted to hold the movable jaw in yielding engagement with the wirebetween the jaws.

. In witness whereof,.we have hereuntoaf- "fixed our signatures.

SAMUEL C.- LAY. i

FREDERICK M. BAKER. 7 

